I did an OTA update just the other day, and was pleasantly surprised to find the phone with around 80% charge despite a 12 hour day at work. Although I hadn't used very much on the phone - it still seemed slightly better than usual.

Factors which I find influence battery life are; widgets, reception, whether connections are left on permanently or switched off, screen brightness, gps.

Other things - I get the occasional crash which just drains the battery. You get a clue that this has happened if it feels pretty hot. I tend to either run 'top' or just reboot the machine if that happens.

Duncan.